We shall employ the general form of a linear
functional on \(H^p(\mathbb {D})\)  [1]}. By this theorem every bounded linear
functional on \(H^p(\mathbb {D})\)  has a unique representation of the form
\(l_g(f)=\lim _{r\rightarrow 1-0}\frac{1}{2\pi }\int _{0}^{2\pi } f(re^{i\theta })g(e^{-i\theta })d\theta ,\) 
